How do I adjust the headlights on my Renault Espace There is no in car dial to adjust and no cross head screws on top of the headlight just an Allen screw which doesn't seem to do anything?

My espace is a mk4, and i have no head light adjuster in the cabin, the headlights adjust automatically with load in the vehicle or if you have a trailer or caravan on. The adjustment is done by a sensor linkage on the lower wish bone on the front near side